CN109630192A - A kind of precipitation method suitable for the construction of half diagenesis bored tunnel - Google Patents
A kind of precipitation method suitable for the construction of half diagenesis bored tunnel Download PDFInfo
- Publication number
- CN109630192A CN109630192A CN201811287207.6A CN201811287207A CN109630192A CN 109630192 A CN109630192 A CN 109630192A CN 201811287207 A CN201811287207 A CN 201811287207A CN 109630192 A CN109630192 A CN 109630192A
- Authority
- CN
- China
- Prior art keywords
- bored tunnel
- construction
- precipitation
- well casing
- pipe portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001556 precipitation Methods 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 44
- 238000010276 construction Methods 0.000 title claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 43
- 238000005553 drilling Methods 0.000 claims abstract description 28
- 239000004927 clay Substances 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 16
- 238000011049 filling Methods 0.000 claims description 11
- 239000004576 sand Substances 0.000 claims description 10
- 238000004140 cleaning Methods 0.000 claims description 6
- 239000002002 slurry Substances 0.000 claims description 4
- 230000002262 irrigation Effects 0.000 claims description 3
- 238000003973 irrigation Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 14
- 239000011435 rock Substances 0.000 abstract description 9
- 238000009434 installation Methods 0.000 abstract description 5
- 238000004162 soil erosion Methods 0.000 abstract description 4
- 238000012546 transfer Methods 0.000 abstract description 3
- 238000007569 slipcasting Methods 0.000 description 3
- 241001074085 Scophthalmus aquosus Species 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000005641 tunneling Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000010338 mechanical breakdown Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F16/00—Drainage
- E21F16/02—Drainage of tunnels
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
A kind of precipitation method suitable for the construction of half diagenesis bored tunnel disclosed by the invention, it is punched downwards by drilling machine and transfers well casing and precipitation is carried out to the stratum for being intended to precipitation region, layering precipitation can be carried out to stratum by adjusting the predetermined depth of pore-forming, and the section of bored tunnel can be avoided according to the actual situation, it avoids having an impact bored tunnel, it can also can carry out before bored tunnel is implemented, without carrying out complicated equipment installation, and dewatering effect is verified by inspecting hole, Engineering Reliability is high, good dewatering effect has been reached to strutum of semi-rock, and to perched water layer, water table aquifer is blocked using clay, effectively reduce earth's surface soil erosion, reduce surface subsidence risk.
Description
Method field
The invention belongs to constructing tunnel fields, relate generally to a kind of precipitation side suitable for the construction of half diagenesis bored tunnel
Method.
Background method
Half diagenesis is a kind of Special Rock of incomplete sedimentary metamorphic of third system, pressure higher with intensity under native state
The features such as contracting is low, weatherability is weak meets water and easily softens disintegration, and dehydration is air-dried easily dry and cracked, then the just disintegration completely that absorbs water, by force
Degree drastically reduces, and especially siltstone and argillaceous siltstoue meet water and easily form quicksand, and saturation terminal compression strength of the single axle fr≤
5MPa belongs to ultimate soft rock.The underground water of the ground belongs to clastic rock pores gap crevice water, has pressure-bearing property, and watery is weak~medium,
Belong to weak~medium pervious bed.
Currently, the prior art generally uses complete (partly) section slip casting in stratum implementation big cross section buried bored tunnel
Or the method for precipitation solves problem of groundwater in hole, but since half diagenesis is in thick-layer shape, structural plane is combined preferably, using complete
When (partly) section slip casting, no matter all it is difficult to reach compensation ground crack using protrusive or retrusive slip casting, obstructs clastic rock class
The purpose of hole crevice water seepage flow, and easily cause underground water pollution；And when using the method for precipitation in hole, need to carry out complexity
Equipment installation, timeliness is poor, and is limited to space in hole, and precipitation range and drawdown are difficult to meet excavation face tunneling boring precipitation
Demand, while needing to continue precipitation before two lining closings, equipment will affect two linings and the construction of outsourcing flexible water in hole.
Summary of the invention
Present invention aims at the defects for being directed to existing method, provide a kind of drop suitable for the construction of half diagenesis bored tunnel
Water method, Engineering Reliability is high, has reached good dewatering effect to strutum of semi-rock, has effectively reduced earth's surface soil erosion, drops
Low land face settles risk.
In order to solve the above technical problems, the present invention by the following method implemented by scheme:
A kind of precipitation method suitable for the construction of half diagenesis bored tunnel, comprising the following steps:
S1, multiple well locations are demarcated on the ground in the desire precipitation region of bored tunnel to be implemented；
S2, in each well location rigging up；
S3, it is drilled into predetermined depth to underground in the well location using the drilling machine, forms pore-forming；
S4, well casing is transferred in the pore-forming；The well casing includes sealing pipe portion and drainage pipe portion, the pipe of the drainage pipe portion
Wall is provided with filter opening；The drainage pipe portion is wrapped with strainer；The height of the filter pipe should be less than or be equal to the desire precipitation area
The desire precipitation in domain ground layer height；
Gap filling gravel material between the outer wall of S5, Xiang Suoshu well casing and the pore-forming, the packed height of the gravel material are answered small
In the predetermined depth；The packed height of the gravel material should be higher than that or equal to the drainage pipe portion height；
Gap filling clay between the outer wall of S6, Xiang Suoshu well casing and the pore-forming binds to ground；
S7, the well casing is cleaned；
S8, it is drawn water by the well casing to the stratum for being intended to precipitation region using water pump.
It further, further include burying mouth guard tube in the well location, the mouth guard tube is above ground level in the step S1
0.10m~0.30m.
Further, when installing the drilling machine in the step S2, the board of the drilling machine should keep firm level, described
The hook of drilling machine is directed at the center to be drilled, the hook of the drilling machine, the drilling machine center of turntable and described to be drilled
3 points of the heart at a vertical line.
Further, further include in the step S3, during the drill hole of drilling machine using change slurry processes carry out borehole cleaning.
Further, further include in the step S4, when transferring the well casing, in the top and bottom of the drainage pipe portion
The centralizer that a set of diameter is less than aperture 10cm is respectively set, to guarantee that drainage pipe portion can be placed centrally in the pore-forming.
Further, in the step S6 before include, by the clay smash to pieces to its partial size be less than 3cm.
Further, the well casing is cleaned using the mode of combined washing well method in the step S7.
Further, the step S8 includes:
S81, the well casing is evacuated using vacuum pump, causes negative pressure in the well casing；
S82, it is drawn water by the well casing to the stratum for being intended to precipitation region using suction pump.
Further, the well casing further includes sand setting pipe portion, and the sand setting pipe portion is arranged below the filter pipe portion.
Further, further includes:
S9, the water pump are connected with pipeline, are drained into the water that the water pump is extracted out by the pipeline preset outside place
In irrigation canals and ditches.
Compared with the conventional method, vantageous methods effect of the invention is as follows:
A kind of precipitation method suitable for the construction of half diagenesis bored tunnel disclosed by the invention, is punched downwards simultaneously by drilling machine
It transfers well casing and precipitation is carried out to the stratum for being intended to precipitation region, layering drop can be carried out to stratum by adjusting the predetermined depth of pore-forming
Water, and can avoid the section of bored tunnel according to the actual situation, avoids having an impact bored tunnel, can also be can be dark
It holes and implements preceding development, verify dewatering effect without carrying out complicated equipment installation, and by inspecting hole, Engineering Reliability is high,
Good dewatering effect has been reached to strutum of semi-rock, and perched water layer, water table aquifer have been blocked using clay, has been effectively reduced
Table soil erosion reduces surface subsidence risk.
Detailed description of the invention
The step of Fig. 1 is a kind of heretofore described precipitation method suitable for the construction of half diagenesis bored tunnel is illustrated
Figure；
Fig. 2 is the scheme of installation of heretofore described well casing；
Fig. 3 is the dewatering effect sectional view of heretofore described well casing.
Specific embodiment
In order to be fully understood from the purpose of the present invention, feature and effect, below with reference to attached drawing and specific embodiment pair
The method effect of design of the invention, specific steps and generation is described further.
As shown in Figure 1, the invention discloses a kind of precipitation method suitable for the construction of half diagenesis bored tunnel, including it is following
Step:
S1, multiple well locations are demarcated on the ground in the desire precipitation region of bored tunnel to be implemented；It, should be by during practice of construction
According to well location plan view measuring well location, if site operation encounters obstacle in the process or the influence by execution conditions shows
Field can make the appropriate adjustments, but well location cannot be in support, stabilization zone.Specifically, also to bury mouth guard tube in well location, prevent from constructing
When pipe is outer returns slurry, mouth guard tube answers 0.1m~0.3m above ground level when burying.By above-mentioned setting, mouth guard tube can assist rotary drilling rig
Initial stage into Kong Dingwei, prevents inclined hole, while superficial part bad ground (miscellaneous fill, weak soil, steady layer of water etc.) being isolated, and prevents from collapsing
Hole；Earth's surface water table aquifer can be also isolated in it, so that water table aquifer is not polluted by drilling machine liquid, mud etc..
S2, in each well location rigging up；Practice of construction can be used it is outstanding dig drilling machine, when rigging up, the board of drilling machine should be protected
The solid water that keeps steady is flat, and the hook of drilling machine is directed at the center to be drilled, the hook of drilling machine, the center of turntable of drilling machine and the center to be drilled
3 points at a vertical line.
S3, it is drilled into predetermined depth to underground in well location using drilling machine, forms pore-forming；During practice of construction, predetermined depth
It can be adjusted according to the aqueous layer depth for being intended to precipitation region, while the section of bored tunnel should be avoided, specific drill hole of drilling machine
During using change slurry processes carry out borehole cleaning；In order to guarantee that pore-forming is not forming blocked up mudcake into water-bearing layer position, work as brill
Start when machine drill to the water-bearing layer ceiling location for being intended to precipitation region plus clear water is sized mixing.After drilling to predetermined depth, before mentioning brill
Drilling rod is mentioned to from bottom hole 0.50m, is punched out, sundries in cleaning hole, while the mud density in hole being gradually adjusted to approach
1.05g/cm3, heavy become silted up of bottom hole is less than 30cm, without until mud in the mud returned out.
Specifically, the schematic diagram that well casing is arranged in following steps S4-S9 is as shown in Figure 2:
S4, well casing 2 is transferred in pore-forming 1；Well casing 2 includes sealing pipe portion 21 and drainage pipe portion 22, the tube wall of drainage pipe portion 22
It is provided with filter opening 221；Drainage pipe portion is wrapped with strainer 222；The height of filter pipe 22 should be less than or equal to the desire for being intended to precipitation region
Precipitation ground layer height；Specifically, 22 subordinate of filter pipe of well casing 2 is additionally provided with sand setting pipe portion 23, when transferring well casing 2, in drainage
The centralizer that a set of diameter is less than aperture 10cm is respectively arranged in the top and bottom of pipe portion 22, to guarantee that drainage pipe portion can be in pore-forming
It is placed centrally；The setting of sand setting pipe portion be in order to which the sand setting generated in well casing decentralization process is isolated, it is direct to prevent sand setting
It results in blockage into drainage pipe portion.
During practice of construction, decentralization well casing process should be carried out continuously, and must not be stopped halfway, such as because of mechanical breakdown reason
It causes to collapse in hole or precipitate blocked up, well casing should be extracted again, tripping in again after cleaning bottom of hole, borehole cleaning is forbidden by force to insert well casing
Enter bottom hole of collapsing.
Gap filling gravel material 3 between the outer wall and pore-forming 1 of S5, Xiang Jingguan 2, the packed height of gravel material 3 should be less than default deep
Degree；The packed height of gravel material 3 should be higher than that or equal to drainage pipe portion 22 height；Pass through above-mentioned setting, the gravel material and drainage of filling
Pipe portion plays the role of filtering underground together, to prevent to take excessive silt out of when drawing water；Meanwhile in practice of construction, apply
Worker person can select the gravel material of different gradation according to soil property, reach best filter effect.
In practice of construction, fill out before gravel material using the depth inside and outside lining rope measurement well casing, sand setting is not to be exceeded in the difference of the two
The length of pipe portion, so can avoid extra sand setting blocking drainage pipe portion while filling out gravel material in the process should be with the height filled out with survey gravel material
Degree.Filling out gravel material process should also be carried out continuously, and must not terminate halfway, until gravel material tripping in predetermined position.
Gap filling clay 4 between the outer wall and pore-forming 1 of S6, Xiang Jingguan 2 binds to ground；Specifically, practice of construction
In, it is bound using plain concrete to well casing；Specifically, being answered before step S6 to prevent from enclosing generation " bridge formation " phenomenon when filling out
Clay 4 is smashed to pieces and is inserted after being less than 3cm to its partial size.Running speed and quantity should be controlled by enclosing when filling out, few along pressing around well casing
Principle under slowing down, which is enclosed, fills out.Then closing work is carried out outside well head pipe.
S7, well casing 2 is cleaned；Specifically, the mode using combined washing well method cleans well casing 2.
S8, it is drawn water using the stratum that water pump is intended to precipitation region by 2 pairs of well casing.
Specifically, the specific implementation step of step S8 includes:
S81, well casing 2 is evacuated using vacuum pump 5, certain negative pressure is caused in well casing 2；
S82, it is drawn water using the stratum that suction pump 6 is intended to precipitation region by 2 pairs of well casing.
By implementation steps S81-S82, is drawn water using vacuum pump negative pressure caused by well casing, the pumping of suction pump can be made
Water effect is more preferable, increases the efficiency of work.
S9, suction pump 6 are connected with pipeline 7, and the water that suction pump 6 is extracted out is drained into preset irrigation canals and ditches outside place by pipeline 7
In.In practice of construction, water is discharged into over-the-counter preset drainage ditch by gutter (canal), the drainage pipeline of place surrounding is answered
Timing clear up, it is ensured that drainage system it is unimpeded.
Specifically, actual implementation effect, as shown in figure 3, reality can be passed through according to the region and position of proposed bored tunnel
Step S1-S9 is applied, bored tunnel is avoided and drills, well casing is avoided into proposed bored tunnel and is installed to arch bottom hereinafter, to tunneling
Clastic rock pores crazing gap water layer locating for tunnel carries out layering precipitation, so that practical in locating half diagenesis before bored tunnel construction
Water level line is in proposed tunnel inverted arch or less.
By disclosed in present embodiment it is a kind of suitable for half diagenesis bored tunnel construction precipitation method, by drilling machine to
Lower punching simultaneously transfers well casing to the stratum progress precipitation for being intended to precipitation region, can carry out by adjusting the predetermined depth of pore-forming to stratum
It is layered precipitation, and the section of bored tunnel can be avoided according to the actual situation, avoids having an impact bored tunnel, it can also be
It can carry out before bored tunnel is implemented, without carrying out complicated equipment installation, and dewatering effect be verified by inspecting hole, engineering is reliable
Property it is high, good dewatering effect has been reached to strutum of semi-rock, and to perched water layer, water table aquifer using clay closure, effectively
Earth's surface soil erosion is reduced, surface subsidence risk is reduced.
The preferred embodiment of the present invention has been described in detail above, it should be understood that the commonsense method personnel of this field without
It needs creative work according to the present invention can conceive and makes many modifications and variations.Therefore, method in all this method fields
Personnel pass through logic analysis, reasoning or available according to limited experiment according to present inventive concept on the basis of existing method
Method scheme, should be among the protection scope determined by the claims.
Claims (10)
1. a kind of precipitation method suitable for the construction of half diagenesis bored tunnel, which comprises the following steps:
S1, multiple well locations are demarcated on the ground in the desire precipitation region of bored tunnel to be implemented；
S2, in each well location rigging up；
S3, it is drilled into predetermined depth to underground in the well location using the drilling machine, forms pore-forming；
S4, well casing is transferred in the pore-forming；The well casing includes that sealing pipe portion and drainage pipe portion, the tube wall of the drainage pipe portion are opened
There is filter opening；The drainage pipe portion is wrapped with strainer；The height of the filter pipe is less than or equal to the desire for being intended to precipitation region
Precipitation ground layer height；
Gap filling gravel material between the outer wall of S5, Xiang Suoshu well casing and the pore-forming, the packed height of the gravel material should be less than institute
State predetermined depth；The packed height of the gravel material should be higher than that or equal to the drainage pipe portion height；
Gap filling clay between the outer wall of S6, Xiang Suoshu well casing and the pore-forming binds to ground；
S7, the well casing is cleaned；
S8, it is drawn water by the well casing to the stratum for being intended to precipitation region using water pump.
2. the precipitation method according to claim 1 suitable for the construction of half diagenesis bored tunnel, which is characterized in that the step
It further include burying mouth guard tube, the mouth guard tube 0.10m~0.30m above ground level in the well location in rapid S1.
3. the precipitation method according to claim 1 suitable for the construction of half diagenesis bored tunnel, which is characterized in that the step
When installing the drilling machine in rapid S2, the board of the drilling machine should keep firm level, what the hook alignment of the drilling machine to be drilled
Center, the hook of the drilling machine, the center of turntable of the drilling machine and 3 points of the center to be drilled are at a vertical line.
4. the precipitation method according to claim 1 suitable for the construction of half diagenesis bored tunnel, which is characterized in that the step
It further include carrying out borehole cleaning using changing slurry processes during the drill hole of drilling machine in rapid S3.
5. the precipitation method according to claim 1 suitable for the construction of half diagenesis bored tunnel, which is characterized in that the step
It further include that when transferring the well casing, a set of diameter is respectively set less than aperture in the top and bottom of the drainage pipe portion in rapid S4
The centralizer of 10cm.
6. the precipitation method according to claim 1 suitable for the construction of half diagenesis bored tunnel, which is characterized in that described
It include that the clay is smashed to pieces to its partial size and is less than 3cm before in step S6.
7. the precipitation method according to claim 1 suitable for the construction of half diagenesis bored tunnel, which is characterized in that the step
The well casing is cleaned using the mode of combined washing well method in rapid S7.
8. the precipitation method according to claim 1 suitable for the construction of half diagenesis bored tunnel, which is characterized in that the step
Suddenly S8 includes:
S81, the well casing is evacuated using vacuum pump, causes negative pressure in the well casing；
S82, it is drawn water by the well casing to the stratum for being intended to precipitation region using suction pump.
9. the precipitation method according to claim 1 suitable for the construction of half diagenesis bored tunnel, which is characterized in that the well
Pipe further includes sand setting pipe portion, and the sand setting pipe portion is arranged below the filter pipe portion.
10. the precipitation method according to claim 1 suitable for the construction of half diagenesis bored tunnel, which is characterized in that also wrap
It includes:
S9, the water pump are connected with pipeline, and the water that the water pump is extracted out is drained into preset irrigation canals and ditches outside place by the pipeline
In.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811287207.6A CN109630192A (en) | 2018-10-31 | 2018-10-31 | A kind of precipitation method suitable for the construction of half diagenesis bored tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811287207.6A CN109630192A (en) | 2018-10-31 | 2018-10-31 | A kind of precipitation method suitable for the construction of half diagenesis bored tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109630192A true CN109630192A (en) | 2019-04-16 |
Family
ID=66067036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811287207.6A Pending CN109630192A (en) | 2018-10-31 | 2018-10-31 | A kind of precipitation method suitable for the construction of half diagenesis bored tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109630192A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110985120A (en) * | 2019-12-31 | 2020-04-10 | 中铁十六局集团北京轨道交通工程建设有限公司 | Precipitation construction method and system for tunnel connection channel of fractured clay layer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104032760A (en) * | 2013-03-05 | 2014-09-10 | 李孝虎 | Foundation pit construction tube well dewatering method |
| CN104762981A (en) * | 2015-02-16 | 2015-07-08 | 中交一航局第一工程有限公司 | Hole forming method of precipitation well |
| CN104790419A (en) * | 2015-03-24 | 2015-07-22 | 中铁三局集团有限公司 | Dewatering construction method applicable to tunnel in water-rich quicksand stratum |
| CN107227961A (en) * | 2017-06-29 | 2017-10-03 | 中铁十二局集团有限公司 | Heavy caliber dewatering well construction method in metro built by mining method hole |
| CN107386308A (en) * | 2017-07-26 | 2017-11-24 | 浙江省工程勘察院 | A kind of side slope slopes automate precipitation method |
-
2018
- 2018-10-31 CN CN201811287207.6A patent/CN109630192A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104032760A (en) * | 2013-03-05 | 2014-09-10 | 李孝虎 | Foundation pit construction tube well dewatering method |
| CN104762981A (en) * | 2015-02-16 | 2015-07-08 | 中交一航局第一工程有限公司 | Hole forming method of precipitation well |
| CN104790419A (en) * | 2015-03-24 | 2015-07-22 | 中铁三局集团有限公司 | Dewatering construction method applicable to tunnel in water-rich quicksand stratum |
| CN107227961A (en) * | 2017-06-29 | 2017-10-03 | 中铁十二局集团有限公司 | Heavy caliber dewatering well construction method in metro built by mining method hole |
| CN107386308A (en) * | 2017-07-26 | 2017-11-24 | 浙江省工程勘察院 | A kind of side slope slopes automate precipitation method |
Non-Patent Citations (1)
| Title |
|---|
| 孙建新: "减压释能技术在穿越极软岩隧道高压富水区的综合应用", 《铁道建筑技术》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110985120A (en) * | 2019-12-31 | 2020-04-10 | 中铁十六局集团北京轨道交通工程建设有限公司 | Precipitation construction method and system for tunnel connection channel of fractured clay layer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100480475C (en) | Controllable one-well lamina precipitation construction method | |
| US4820080A (en) | Process for the construction of a drain system | |
| CN109736338A (en) | A kind of hydraulic engineering foundation pit pipe well combination light well point Yield rainfall relation method | |
| CN205152968U (en) | Precipitation tubular well structure | |
| CN111335344A (en) | Super pressure suction combined well point dewatering construction method for subway deep foundation pit | |
| CN102383412A (en) | Construction method by adopting dewatering and water recharging to control sedimentation surrounding deep foundation pit | |
| LU500273B1 (en) | New comprehensive dewatering and drainage method and drainage device for mudstone subway station | |
| CN110029680B (en) | Deep foundation pit dewatering construction method | |
| CN110318410A (en) | A kind of deep basal pit chance artesian water is prominent to gush decompression drought stress construction method | |
| CN103088836A (en) | Sedimentation control method for pumping water and performing reinjection in well casing simultaneously | |
| CN111139852A (en) | Water-rich sandy gravel stratum high-permeability ultra-deep foundation pit dewatering construction method | |
| CN107816051A (en) | Pressure-bearing property phreatic aquifer deep basal pit combination well dewatering construction method | |
| CN108867673A (en) | A kind of underwater prevention method in the foundation pit based on the curtain that draws water | |
| CN103147450A (en) | Construction method for plugging partial steel pipe dewatering well by using flange plates for excavation of deep foundation pit | |
| CN209066468U (en) | A kind of base pit dewatering device | |
| CN205152969U (en) | A precipitation tubular well structure for foundation ditch precipitation | |
| CN107246022A (en) | A kind of dewatering well tubular construction and construction method for stretching to artesian aquifer | |
| CN109610486A (en) | A kind of high slope Permeable interlayer trapping method | |
| CN109630192A (en) | A kind of precipitation method suitable for the construction of half diagenesis bored tunnel | |
| CN209114425U (en) | A kind of irrigation canals and ditches that can normally use in a variety of contexts | |
| CN208023598U (en) | A kind of base pit dewatering pipe well | |
| CN211037023U (en) | Pipe well dewatering well arranged at bottom of underground diaphragm wall | |
| CN114250801A (en) | Pipe well and light well point combined dewatering construction method | |
| CN212405178U (en) | Deep water falling hole processing structure of backfill foundation in large karst depression | |
| CN203066092U (en) | Pumping and recharging dual-purpose well casing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190416 |